Cleaning liquid for ship ballast water treatment filter, online cleaning device and online cleaning method

Abstract

The present invention discloses a cleaning liquid for a ship ballast water treatment filter, an online cleaning device and an online cleaning method. The online cleaning device comprises a filter cleaning pipeline and a cleaning liquid preparation tank located in the filter cleaning pipeline. The cleaning liquid preparation tank is provided with a cleaning liquid outlet and a cleaning liquid reinjection opening. The filter cleaning pipeline comprises a cleaning liquid injection pipeline located between the cleaning liquid outlet of the cleaning liquid preparation tank and a filter water inlet, and a cleaning liquid reinjection pipeline located between a filter water outlet and a cleaning liquid reinjection opening of the cleaning liquid preparation tank. The cleaning liquid prepared in the cleaning liquid preparation tank is injected into the filter through the cleaning liquid injection pipeline and is re-injected into the cleaning liquid preparation tank through the cleaning liquid reinjection pipeline.

1 . A cleaning liquid for cleaning a ship ballast water treatment filter, wherein the cleaning liquid comprises hydrochloric acid with a molar concentration of 3.2-6.4 mol/L, hexamethylene tetramine with a quality-to-volume ratio of 1.3-4.0 g/L, polyacrylic acid with a quality-to-volume ratio of 13.0-33.5 g/L, polyaspartic acid with a quality-to-volume ratio of 3.0-13.5 g/L, sodium dodecyl sulfate with a quality-to-volume ratio of 0.6-2.0 g/L, and sodium gluconate with a quality-to-volume ratio of 3.0-10.0 g/L. 
     
     
         2 . The cleaning liquid for cleaning a ship ballast water treatment filter of  claim 1 , wherein in the prepared cleaning liquid, the molar concentration of the hydrochloric acid is 6.0 mol/L, the quality-to-volume ratio of the hexamethylene tetramine is 2.5 g/L, the quality-to-volume ratio of the polyacrylic acid is 16.0 g/L, the quality-to-volume ratio of the polyaspartic acid is 8.5 g/L, the quality-to-volume ratio of the sodium dodecyl sulfate is 0.8 g/L, and the quality-to-volume ratio of the sodium gluconate is 6.5 g/L. 
     
     
         3 . The cleaning liquid for cleaning a ship ballast water treatment filter of  claim 1 , wherein in the prepared cleaning liquid, the molar concentration of the hydrochloric acid is 4.0 mol/L, the quality-to-volume ratio of the hexamethylene tetramine is 2.0 g/L, the quality-to-volume ratio of the polyacrylic acid is 20.0 g/L, the quality-to-volume ratio of the polyaspartic acid is 10.0 g/L, the quality-to-volume ratio of the sodium dodecyl sulfate is 1.0 g/L, and the quality-to-volume ratio of the sodium gluconate is 5.0 g/L. 
     
     
         4 . The cleaning liquid for cleaning a ship ballast water treatment filter of  claim 1 , wherein in the prepared cleaning liquid, the molar concentration of the hydrochloric acid is 5.0 mol/L, the quality-to-volume ratio of the hexamethylene tetramine is 1.5 g/L, the quality-to-volume ratio of the polyacrylic acid is 15.0 g/L, the quality-to-volume ratio of the polyaspartic acid is 5.0 g/L, the quality-to-volume ratio of the sodium dodecyl sulfate is 1.2 g/L, and the quality-to-volume ratio of the sodium gluconate is 4.0 g/L. 
     
     
         5 . An online cleaning device for a ship ballast water treatment filter, wherein the online cleaning device comprises a filter cleaning pipeline and a cleaning liquid preparation tank located in the filter cleaning pipeline, the cleaning liquid preparation tank comprising a cleaning liquid outlet and a cleaning liquid reinjection opening, the filter cleaning pipeline comprising a cleaning liquid injection pipeline arranged between the cleaning liquid outlet of the cleaning liquid preparation tank and a filter water inlet, and a cleaning liquid reinjection pipeline arranged between a filter water outlet and the cleaning liquid reinjection opening of the cleaning liquid preparation tank, the cleaning liquid prepared in the cleaning liquid preparation tank being injected into the filter via the cleaning liquid injection pipeline and re-injected into the cleaning liquid preparation tank via the cleaning liquid reinjection pipeline. 
     
     
         6 . The online cleaning device for a ship ballast water treatment filter of  claim 5 , wherein the cleaning liquid prepared in the cleaning liquid preparation tank comprises hydrochloric acid with a molar concentration of 3.2-6.4 mol/L, hexamethylene tetramine with a quality-to-volume ratio of 1.3-4.0 g/L, polyacrylic acid with a quality-to-volume ratio of 13.0-33.5 g/L, polyaspartic acid with a quality-to-volume ratio of 3.0-13.5 g/L, sodium dodecyl sulfate with a quality-to-volume ratio of 0.6-2.0 g/L, and sodium gluconate with a quality-to-volume ratio of 3.0-10.0 g/L. 
     
     
         7 . The online cleaning device for a ship ballast water treatment filter of  claim 5 , wherein the filter is located in a ballast water main pipeline of a ship ballast water management system, the filter water inlet is connected with a filter water inlet pipe, the filter water outlet is connected with a filter water outlet pipe, two ends of the cleaning liquid injection pipeline are respectively connected with the cleaning liquid outlet of the cleaning liquid preparation tank and the filter water inlet pipe, and two ends of the cleaning liquid reinjection pipeline are respectively connected with the filter water outlet pipe and the cleaning liquid reinjection opening of the cleaning liquid preparation tank. 
     
     
         8 . The online cleaning device for a ship ballast water treatment filter of  claim 7 , wherein the filter water inlet pipe is provided with a filter water inlet valve, the connection between the cleaning liquid injection pipe and the filter water inlet pipe is located at downstream of the filter water inlet valve, the cleaning liquid injection pipeline is provided with a valve at a position near the filter water inlet pipe, the valve is open in the process of the cleaning liquid being injected into the filter, the filter water inlet valve is close in the process of online cleaning the filter; the filter water outlet pipe is provided with a filter water outlet valve, a connection between the cleaning liquid reinjection pipeline and the filter water outlet pipe is located at upstream of the filter water outlet valve, the cleaning liquid reinjection pipeline is provided with a valve at a position close to the filter water outlet pipe, the filter water outlet valve is close in the process of online cleaning the filter, and the valve is open in the process of the cleaning liquid is re-injected into the cleaning liquid preparation tank. 
     
     
         9 . The online cleaning device for a ship ballast water treatment filter of  claim 8 , wherein the cleaning liquid injection pipe is provided with a valve at a position close to the cleaning liquid preparation tank, a water pump is arranged between the valve and the valve, a backwash water injection pipe is arranged between the valve and the water pump, the backwash water injection pipe is provided with a backwash water injection valve, the valve is open in the process of the cleaning liquid being injected into the filter and is close after the cleaning liquid is injected into the filter, the backwash water injection valve is close in the process of the cleaning liquid being injected into the filter and open after the cleaning liquid is re-injected into the cleaning liquid preparation tank, the backwash fresh water is injected into the filter through the backwash water injection valve after the backwash water injection valve is open, the water pump is started during the process of the cleaning liquid is injected into the filter and the process of the backwash fresh water is injected into the filter. 
     
     
         10 . The online cleaning device for a ship ballast water treatment filter of  claim 8 , wherein the cleaning liquid reinjection pipeline is provided with a water pump which is open during the process of the cleaning liquid is re-injected into the cleaning liquid preparation tank and close during the process of the cleaning liquid is injected into the filter. 
     
     
         11 . The online cleaning device for a ship ballast water treatment filter of  claim 5 , wherein the cleaning liquid preparation tank is provided with a stirring electric motor and a stirring shaft and stirring blades connected with the stirring electric motor, the stirring electric motor driving the stirring blades to stir liquid in the cleaning liquid preparation tank during the process of preparing the cleaning liquid. 
     
     
         12 . An online cleaning method for cleaning a ship ballast water treatment filter, wherein the online cleaning method comprising:
 adding a filter cleaning pipeline and a cleaning liquid preparation tank in a ballast water main pipeline of a ship ballast water management system, the filter cleaning pipeline comprising a cleaning liquid injection pipeline and a cleaning liquid reinjection pipeline, the cleaning liquid injection pipeline being located between the cleaning liquid outlet of the cleaning liquid preparation tank and a filter water inlet, the cleaning liquid reinjection pipeline being located between a filter water outlet and a cleaning liquid reinjection opening of the cleaning liquid preparation tank;   injecting the cleaning liquid prepared in the cleaning liquid preparation tank into the filter through the cleaning liquid injection pipeline;   soaking for a predetermined period of time;   re-injecting the cleaning liquid back to the cleaning liquid preparation tank through the cleaning liquid reinjection pipeline.   
     
     
         13 . The online cleaning method for cleaning a ship ballast water treatment filter of  claim 12 , wherein the filter water inlet is connected with a filter water inlet pipe, the filter water outlet is connected with a filter water outlet pipe, a filter sewage outfall is connected with a filter sewage outfall pipe, the filter water inlet pipe, the filter outlet pipe and the filter sewage outfall pipe are respectively provided with a filter inlet valve, a filter outlet valve and a filter drain valve, two ends of the cleaning liquid injection pipeline are respectively connected with the cleaning liquid outlet of the cleaning liquid preparation tank and the filter water inlet pipe, and the connection between the cleaning liquid injection pipe and the filter water inlet pipe is located at downstream of the filter water inlet valve, two ends of the cleaning liquid reinjection pipeline are respectively connected with the filter water outlet pipe and the cleaning liquid rejection opening of the cleaning liquid preparation tank, and the connection between the cleaning liquid reinjection pipeline and the filter water outlet pipe is located at upstream of the water outlet valve, the cleaning liquid injection pipeline is provided with a valve and a water pump, the cleaning liquid reinjection pipeline is provided with a valve and a water pump, before the step of injecting the cleaning liquid into the filter the online cleaning method further comprising:
 opening the filter drain valve to drain the filter;   closing the filter inlet valve, the filter outlet valve and filter drain valve and turning on the valve and the water pump;   after the step of injecting the cleaning liquid into the filter the online cleaning method further comprising:   turning off the valve and the water pump;   after the step of soaking the online cleaning method further comprising:   turning on the valve and the water pump.   
     
     
         14 . The online cleaning method for cleaning a ship ballast water treatment filter of  claim 13 , wherein the cleaning liquid injection pipeline is provided with a valve between the valve and the filter inlet pipe, a backwash water injection pipe is arranged between the valve and the water pump, and the backwash water injection pipe is provided with a backwash water injection valve, the online cleaning method further comprising opening the valve at the time of opening the valve and starting the water pump;
 after the step of re-injecting the cleaning liquid into the cleaning liquid preparation tank the online cleaning method further comprising:   turning on the backwash water injection valve and the water pump;   backwashing the filter for a predetermined period of time.   
     
     
         15 . The online cleaning method for cleaning a ship ballast water treatment filter of  claim 12 , wherein the cleaning liquid prepared in the cleaning liquid preparation tank comprises hydrochloric acid with a molar concentration of 3.2-6.4 mol/L, hexamethylene tetramine with a quality-to-volume ratio of 1.3-4.0 g/L, polyacrylic acid with a quality-to-volume ratio of 13.0-33.5 g/L, polyaspartic acid with a quality-to-volume ratio of 3.0-13.5 g/L, sodium dodecyl sulfate with a quality-to-volume ratio of 0.6-2.0 g/L, and sodium gluconate with a quality-to-volume ratio of 3.0-10.0 g/L.